LNMP安装完毕后，MySQL启动时报错，log如下：

This crash occured while the server was calling initgroups(). This is
often due to the use of a mysqld that is statically linked against
glibc and configured to use LDAP in /etc/nsswitch.conf.
You will need to either upgrade to a version of glibc that does not
have this problem (2.3.4 or later when used with nscd),
disable LDAP in your nsswitch.conf, or use a mysqld that is not statically linked.
231108 12:33:01 mysqld_safe mysqld from pid file /usr/local/mysql/var/xadns.pid ended


something is definitely wrong and this may fail.

key_buffer_size=0
read_buffer_size=262144
max_used_connections=0
max_threads=500
thread_count=0
connection_count=0
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 389207 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x0
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
stack_bottom = 0 thread_stack 0x40000
[0x758059]
[0x5a255c]
[0x628c60]
/lib/x86_64-linux-gnu/libnss_systemd.so.2(+0xf2e2) [0x7f4fbbc072e2]
/lib/x86_64-linux-gnu/libnss_systemd.so.2(+0x145ff) [0x7f4fbbc0c5ff]
/lib/x86_64-linux-gnu/libnss_systemd.so.2(+0x9701) [0x7f4fbbc01701]
/lib/x86_64-linux-gnu/libnss_systemd.so.2(+0x25f88) [0x7f4fbbc1df88]
/lib/x86_64-linux-gnu/libnss_systemd.so.2(+0x9a3f) [0x7f4fbbc01a3f]
/lib/x86_64-linux-gnu/libnss_systemd.so.2(+0x3143a) [0x7f4fbbc2943a]
[0x87b56a]
[0x87b9be]
[0x87bbed]
[0x4c427d]
[0x4049e8]
[0x816821]
[0x40fbba]

分析：
在Debian9/10中安装部署MySQL5.1等较低版本中回出现mysqld glibc静态链接配置问题。
解决：

编辑文件/etc/nsswitch.conf注释掉group:          files systemd
cat /etc/nsswitch.conf
# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc-reference' and `info' packages installed, try:
# `info libc "Name Service Switch"' for information about this file.

passwd:         files systemd
#group:          files systemd
shadow:         files
gshadow:        files

hosts:          files dns
networks:       files

protocols:      db files
services:       db files
ethers:         db files
rpc:            db files

netgroup:       nis

清理文件，重新初始化MySQL

cd /usr/local/mysql/var
rm * -rf
/usr/local/mysql/bin/mysql_install_db --user=mysql

启动MySQL

/etc/init.d/mysql start

至此，问题解决。